EP3286552A1 - Dispositif d'inspection de récipients et procédé d'inspection de récipients pour l'inspection de récipients - Google Patents

Dispositif d'inspection de récipients et procédé d'inspection de récipients pour l'inspection de récipients

Info

Publication number
EP3286552A1
EP3286552A1 EP16705063.2A EP16705063A EP3286552A1 EP 3286552 A1 EP3286552 A1 EP 3286552A1 EP 16705063 A EP16705063 A EP 16705063A EP 3286552 A1 EP3286552 A1 EP 3286552A1
Authority
EP
European Patent Office
Prior art keywords
container
time
containers
lamp
inspection device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP16705063.2A
Other languages
German (de)
English (en)
Other versions
EP3286552B1 (fr
Inventor
Christof Will
Anton Niedermeier
Karl Aichinger
Reinhard Klinger
Stefan Piana
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Krones AG
Original Assignee
Krones AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Krones AG filed Critical Krones AG
Publication of EP3286552A1 publication Critical patent/EP3286552A1/fr
Application granted granted Critical
Publication of EP3286552B1 publication Critical patent/EP3286552B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/90—Investigating the presence of flaws or contamination in a container or its contents
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8806—Specially adapted optical and illumination features
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/32—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing
    • E06B3/48—Wings connected at their edges, e.g. foldable wings
    • E06B3/485—Sectional doors
    • E06B3/486—Sectional doors with hinges being at least partially integral part of the section panels
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/06—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/06—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type
    • E06B9/0607—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type comprising a plurality of similar rigid closing elements movable to a storage position
    • E06B9/0615—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type comprising a plurality of similar rigid closing elements movable to a storage position characterised by the closing elements
    • E06B9/0638—Slats or panels
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/08—Roll-type closures
    • E06B9/11—Roller shutters
    • E06B9/15—Roller shutters with closing members formed of slats or the like
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/90—Investigating the presence of flaws or contamination in a container or its contents
    • G01N21/9009—Non-optical constructional details affecting optical inspection, e.g. cleaning mechanisms for optical parts, vibration reduction
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/175—Controlling the light source by remote control
    • H05B47/18—Controlling the light source by remote control via data-bus transmission
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/06—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type
    • E06B9/0607—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type comprising a plurality of similar rigid closing elements movable to a storage position
    • E06B9/0646—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type comprising a plurality of similar rigid closing elements movable to a storage position characterised by the relative arrangement of the closing elements in the stored position
    • E06B2009/0684—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type comprising a plurality of similar rigid closing elements movable to a storage position characterised by the relative arrangement of the closing elements in the stored position stored in a spiral like arrangement
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/08—Roll-type closures
    • E06B9/11—Roller shutters
    • E06B9/15—Roller shutters with closing members formed of slats or the like
    • E06B2009/1505—Slat details
    • E06B2009/1522—Sealing joint between adjacent slats
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/08—Roll-type closures
    • E06B9/11—Roller shutters
    • E06B9/15—Roller shutters with closing members formed of slats or the like
    • E06B2009/1533—Slat connections
    • E06B2009/1538—Slats directly connected
    • E06B2009/1544—Engaging section has curved articulation surfaces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8806—Specially adapted optical and illumination features
    • G01N2021/8835—Adjustable illumination, e.g. software adjustable screen
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8806—Specially adapted optical and illumination features
    • G01N2021/8838—Stroboscopic illumination; synchronised illumination
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/06—Illumination; Optics
    • G01N2201/062—LED's
    • G01N2201/0621—Supply
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/06—Illumination; Optics
    • G01N2201/069—Supply of sources
    • G01N2201/0695—Supply to maintain constant beam intensity
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/20—Controlling the colour of the light
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits

Definitions

  • the present invention relates to a container inspection apparatus and a container inspection method for inspecting containers or their associated associated secondary packaging units such as crates and containers or pallets.
  • the container inspection apparatus and the container inspection method may, for example, be used in a container treatment plant in which the containers are inspected for defects, defects, etc. with the container inspection apparatus.
  • DE 100 17 126 C1 shows a method and a device for optically checking transparent containers.
  • the device for carrying out the method has an LED luminescent screen with a plurality of individually or group-wise activatable LEDs.
  • the LED screen is in addition to a stream of in a series of successively arranged transparent containers, a container stream arranged. If the containers are illuminated with the LED screen, an image of the container can be taken to perform the optical inspection of the container.
  • An inspection device thus comprises a lighting, an optical recording unit and an image evaluation unit.
  • the recording unit and image evaluation unit can be implemented in the same device, such. In so-called vision
  • the lighting can be designed as a continuous light or switched light or flashed light.
  • a lighting time T E IN of approx. 1 second to °° is understood here.
  • the lighting time T E IN is approx. 150 s to approx. 2 s.
  • the lighting time T E IN is approx. 1 s to 400 s.
  • the transitions are flowing.
  • the remaining time, ie the non-lighting time the lighting is switched off. This non-lighting time is also referred to below as the turn-off time T A us.
  • the inspection of containers is preferably carried out with flashed lights. This is the most elaborate lighting at the same time. If the inspection task allows it, a switched lighting or a permanent light could also be used. Flashed or switched lights may have their own energy storage to provide for the duration of the lighting time T E IN a sufficiently large amount of energy. The following is only spoken by flash lighting, however, the explanations also apply in the same way for switched lights.
  • a lighting is triggered by a trigger signal which triggers a predefined flash duration in the lighting or is controlled by the signal length.
  • lighting requires at least the following connections: a power supply, a flashed or switched lighting, and in addition a trigger signal or switch-on signal (T E
  • a trigger signal or switch-on signal T E
  • the evaluation unit is for the recording unit, which can be designed as 1 D, 2D or 3D camera, usually a shutter (shutter) is used, which is open for a predetermined aperture time T s (shutter time) and a Recording sensor releases. Only the temporal intersection of aperture time T s and illumination time T E
  • either the lighting time T E IN SO is set so that the shutter speed T s is always within the lighting time T E IN, or vice versa.
  • the lighting time T E IN should not be extended arbitrarily, because then the benefits of actually to be selected lighting time T E IN are lost.
  • the aperture time T s should not be extended arbitrarily, because thus the recording sensor for extraneous light, such as ambient light or flashes of light from other inspection units is susceptible and may irritate the subsequent evaluation.
  • the lighting must be synchronized with the recording unit.
  • the synchronization is achieved by a common trigger line, or the recording unit controls the lighting via a digital output. It is also possible that the lighting controls the recording unit.
  • a synchronization of a clock of the recording unit and a clock of lighting can be done for example via a computer network running an established time protocol, such as SNTP or NTP.
  • SNTP an established time protocol
  • NTP an established time protocol
  • a computer network can not guarantee that a communication packet will reach the capture unit and illumination as a participant of synchronization within a predefined time.
  • the predefined time is derived, for example, from the image field of the recording unit and the reaction time for recording after the detection of the container.
  • the time for a transport of the container over the route results from the transport speed of the container treatment plant, the z. B. in a stretch blow molder up to 8 m / s.
  • a rotary encoder signal is relevant. With the encoder signal, it is checked in about every ⁇ ⁇ to 10ms, typically every 0.2 - 5ms, whether the container has actually traveled the distance between the detection of the container and the location of the recording.
  • the container detection signal and the encoder signal are stimuli for deciding when to trigger a recording with the recording unit. Because of the resulting from the above conditions for a container treatment plant short reaction time and thus predefined time separates the computer network for the timely, synchronous triggering of shutter speed and flash time and thus for the required synchronization.
  • an unfavorably routed line can couple interference and trigger flash illumination in an uncontrolled manner. False, uncontrolled triggered trigger deprive the energy storage of lighting unintentionally energy. If the energy storage is not sufficiently charged, a necessary flash can not be performed with full brightness. As a result, the brightness in the recorded image fluctuates, in the worst case the image is too dark. This increases the cost of cabling, since, for example, power-carrying (motor) lines must be laid separately from the trigger line. Another problem is that a large number of fast outputs are required in the container inspection device. In a higher-level system, not only the stimuli must be read in, but also outputs must be provided. This increases the cost of the container inspection device.
  • Capture unit A and B use the same lighting.
  • the recording units A, B act independently of each other.
  • the outputs of both recording units A, B control the lighting.
  • For decoupling diodes are used. If, depending on the processed product, it is intended to switch between transmitted-light illumination C and reflected-light illumination D, the synchronization between the cameras and the illuminations is very complicated.
  • One solution may be additional AND gates in the illumination path.
  • the trigger possibilities must also be known a priori in the cabling topology.
  • a container inspection device and a container inspection method for inspection of containers are to be provided, which can realize that an inspection of the container reliably meets the required quality requirements and yet is simple and inexpensive to implement.
  • the container inspection device for inspection of containers according to claim 1.
  • the container inspection device comprises at least one luminaire for illuminating containers at a predetermined inspection time for inspecting the containers, and an electrical line for connecting the at least one luminaire to an electrical power supply and to a bus system, such that the electrical line serves both to supply the at least one luminaire with electrical energy as well as for connection to a real-time data network.
  • a further advantage is that the complexity of a wiring between the individual components of the container inspection device or the container treatment system and in the control cabinet of the container inspection device is greatly reduced if the wiring is accomplished only via a single line or connector.
  • the container inspection device has an in-line solution for its lights and peripherals. Overall, significantly fewer electrical cables are to be laid in and for the container inspection device. This also saves space in the control cabinet.
  • a bus connection of flash lighting is described by means of an in-line solution, so that only one line to the lighting or the lights is to be led. Over the line, the power supply, the real-time data such. As triggers, and possibly the parameterization of the lighting realized. Thus, no separate trigger line to the lights must be introduced.
  • the type of real-time data transmission, ie the trigger signal is extremely insensitive to electromagnetic radiation. This greatly simplifies cabling of the lights or flash lights while improving trigger reliability. This also results in the advantage of simple expandability of the entire system by individual components, since this no hardware expansion of the central system is necessary, but only another bus subscriber is looped into the combined bus and supply line. It is also advantageous here that several lamps or lamps or other appropriately equipped devices can be simply connected in a chain ('daisy chain').
  • Another big advantage is that the wiring topology is independent of the trigger topology. This increases the flexibility of the overall system.
  • an advantage is that no control outputs on the recording unit or at a higher level for the triggers of lighting are necessary. It is also advantageous that synchronization mechanisms between several lights or lamps can be easily executed as a software function and no cross-wiring is needed. Thus, e.g. the suppression of the flash of a second illumination or other adjacent inspection system can be realized while a first illumination is active. Thereby, e.g. disturbing light reflections or stray light are avoided.
  • the bus system is further configured to supply a trigger signal to the at least one luminaire to trigger the illumination of containers at the predetermined inspection time for inspecting the containers.
  • the wiring of the container inspection device is much less expensive and space-saving and cost-effective.
  • the trigger signal for triggering the at least one luminaire can be configured by oversampling the bus system in the single-digit microsecond range.
  • the electrical line is a data cable, of which at least one core pair is provided for connection to the electrical power supply and at least one wire pair for connection to the bus system.
  • the at least one luminaire is an LED flashing light, which has an energy buffer for temporarily storing the electrical energy supplied by the electrical energy supply, and wherein the energy buffer is configured such that the LED flashing light from the energy buffer can temporarily take an amount of energy, the higher is the energy provided by the electrical power supply at the time of removal.
  • the buffer can be designed, for example, as a capacitor or battery.
  • the intermediate energy store can be configured such that at least two luminaires can flash at least simultaneously in the predetermined inspection cycle for illuminating a container, and / or the container inspection device can be designed to control the LED flashbulb in such a way that for the same container in a container stream of a container treatment plant successively different areas of the LED flashing light for inspection of a container are turned on.
  • the color and / or brightness of the at least one luminaire, in particular during illumination of a container be controllable.
  • the container inspection device described above may be part of a container treatment system for treating containers.
  • the object is also achieved by a container inspection method for inspecting containers according to claim 9.
  • the container inspection method comprises the steps of supplying, with an electrical lead, at least one lamp from an electrical power supply with electrical energy, transmitting data to the electrical lead, via a bus system such that the electrical lead receives the at least one lamp with both electrical energy connected and connected to a real-time data network, and lighting containers at a predetermined inspection time for inspecting the container with the at least one lamp or in a predetermined inspection clock for triggering over a real-time capable bus line.
  • the container inspection method achieves the same advantages as previously mentioned with respect to the container inspection device.
  • Fig. 1 is a block diagram illustrating a machine having a container inspection apparatus according to a first embodiment
  • FIG. 2 is a block diagram illustrating the electrical connection of the container inspection apparatus according to the first embodiment
  • FIG. 3 is a schematic view of a data frame transmitted in the bus system of the container inspection apparatus according to the first embodiment.
  • identical or functionally identical elements are provided with the same reference numerals, unless stated otherwise.
  • a machine 1 very schematically shows a part of a machine 1 comprising, for example, a container treatment plant, in particular an empty bottle inspection machine, full bottle inspection machine, label inspection device, lid inspection machine, preform inspection machine, level control machine, stretch blow molding machine, filling machine, glass container processing machine, etc., a packaging installation, a box inspection facility, etc. can be.
  • a container treatment plant in particular an empty bottle inspection machine, full bottle inspection machine, label inspection device, lid inspection machine, preform inspection machine, level control machine, stretch blow molding machine, filling machine, glass container processing machine, etc., a packaging installation, a box inspection facility, etc.
  • containers 2 in particular transparent plastic bottles, glass bottles, metal cans, preforms, empty, full, closed, unlocked, labeled, not labeled, etc.
  • the container inspection device described below can be upstream and / or downstream of each treatment step in the container treatment plant.
  • secondary packaging units such as beverage crates and containers or pallets, can also be inspected for the containers 2.
  • FIG. 1 not all containers 2 are provided with a reference numeral for the sake of simplicity.
  • the containers 2 are moved in a container stream 3, in which the containers 2 are arranged one after another in a row one after the other, by means of a transport device 4 by a container inspection device 10 in the direction of an arrow TR.
  • the container 2 to lights 1 1, 12 and recording units 21, 22, 23, 24 are moved past.
  • the machine 1 is operated or even viewed by a person 5, for example.
  • Photocells 71, 72 and / or rotary encoders 81, 82 can detect states of the containers 2 on the transport device 4 or only one movement, in particular rotation, of the transport device 4 without container 2.
  • the light barriers 71, 72 and / or rotary encoders 81, 82 can be used to detect the path of the containers 2 and thus to determine the speed of the container stream 3.
  • the light barriers 71, 72 and / or rotary encoders 81, 82 are arranged for example decentrally, in particular at the inlet and / or outlet of the container 2 in / from the container inspection device 10.
  • the lamp 1 1 is arranged between the receiving units 21, 22 on one side of the container stream 3.
  • the luminaire 12 is arranged between the receiving units 23, 24 on the other side of the container stream 3.
  • the containers 2 can be illuminated from two different sides.
  • the receiving units 23, 24 are positioned so that they can take from each of the container 2 images of, for example, the four directions R1, R2, R4, R5, which are shown in Fig. 1 by an arrow. If required, the receiving units 21, 22, 23, 24 can also be positioned differently, so that, for example, images are taken obliquely above the lamp 11 or diagonally below the lamp 12, and / or pictures at different heights of the container 2, etc.
  • One or both of the lights 1 1, 12 illuminate the containers 2 on the basis of an activation of the detection system illustrated in greater detail in FIG. 2 such that one or more of the receiving units 21 to 24 can optically detect the containers 2.
  • the Recording units 21 to 24 can record, for example, images that are evaluated for detecting defects, defects, etc. of the container 2.
  • the receiving units 21 to 24 may be cameras.
  • the wavelength of the illuminants covers the range of radiation with a frequency in the terahertz range up to the range of the wavelength of x-rays.
  • Fig. 2 shows a specific embodiment of the container inspection device 10 in more detail.
  • a bus system 6 is provided, to which many of the components of the machine 1 are connected.
  • connecting lines 7, 8, 9 are provided.
  • the bus system 6 is in particular an Ethernet real-time fieldbus
  • the bus system 6 provides a real-time data network. Over the point to point connections (Point-to-Point: in the true sense - thus the connection route completely without intermediate station) 7, 8 or 9 can as recording units 21 to 26 industrial cameras at existing data networks, by the use of the Gigabit Ethernet standard be connected.
  • the receiving units 23, 24 are not shown.
  • connection line 7 can be realized in particular for the GigEVision® standard.
  • the connecting line 8 can connect a receiving unit 25 via a USB interface to an image acquisition system 40 would also be possible with the connecting line 9, a connection via alternative vision protocols such as FireWire or CoaXPress.
  • the container inspection device 10 has the first lamp 1 1 with an energy buffer 1 1 1, a second lamp 12 with a power buffer 121, a third lamp 13 with a power buffer 131, a fourth light 14th with an energy buffer 141, a fifth light 15 with an energy buffer 151 and a first and second light field 152, 153, the first and second recording unit 21, 22, a fifth recording unit 25 and a sixth recording unit 26, wherein the recording units 21, 22, 25 , 26 constitute a detection system and / or in each case can be embodied in general as an optical detection device, an optional power injector or electric power supply 30, a bus system controller 35, an image acquisition system 40 with a connection module 41 and to which an electrical line 50 is connected and a general user interface 55.
  • the signals of the light barriers 71, 72 and / or rotary encoders 81, 82 can also be forwarded to the bus system controller 35, although this is not shown in FIG.
  • the luminaire 15 can also have more than two light fields 152, 153, which can be controlled separately from one another and thus can be lit separately from one another. In the second luminaire 14, lighting can be controlled with respect to the color and / or brightness profile.
  • the energy buffer 1 1 1, 121, 131, 141, 151 are configured such that the associated lamp 1 1 to 15 or flashing light from the respective intermediate energy storage 1 1 1, 121, 131, 141, 151 can briefly remove an amount of energy, the is higher than the energy supplied by the electrical power supply at the time of removal.
  • At least one lamp 1 1 to 14 and / or one lamp 15 having at least two separate light fields 152, 153 can be used at least temporarily simultaneously and / or in quick succession and / or with different ones with the energy buffer 1 1 1 or the other energy buffers of the lamps 12 to 15 Duration and / or different electrical power to be supplied with lightning.
  • the lights 1 1 to 15 form a flash unit that provides a lot of light for a very short time or impulsively.
  • the light pulse lasts not very long, at full power usually only a few thousandths of a second, as previously described in the introduction to the description.
  • the optional power injector or the electrical power supply 30 may take over or supplement the power supply of the lights 1 1 to 15 instead of the power supply unit provided in the connection module 41 for supply with a voltage U and be looped in anywhere in the real-time bus system 6. Are very many lights 1 1 to 15 or other consumers connected to the line for the real-time bus system 6, the feed can be made to the electrical power supply in several places.
  • the image acquisition system 40 shown in simplified form has a connection module 41.
  • the connection module 41 is used to connect the electrical line 50, via which an electrical power supply with the voltage U and the trigger signal TG1 on different wires or wire pairs are performed.
  • the image acquisition system 40 also has connections 43, 44 for connecting both the bus system controller 35 and the line of the bus system 6, for example via a data connector, such as an RJ-45 connector.
  • a data connector such as an RJ-45 connector.
  • the image recording system 40 with its terminals 42, 45 and 46 various connection options for a variety of camera interfaces, such as USB Vision Camera Link, CoaXPress, GigEVision or more, using the connecting lines 7, 8 and 9 ..
  • the real-time bus system 6 and the connecting lines 7.8 , 9 are clearly separated by an I / O module or input / output module 48.
  • the general user interface 55 may be implemented as a personal computer (PC) and may also be referred to as a GUI PC. With the general user interface 55, the person 5 can operate and monitor the container inspection device 10.
  • PC personal computer
  • GUI PC GUI PC
  • the image pickup system 40 of FIG. 2 is for triggering the lighting with at least one of the lights 1 1 to 15 a real-time bus, z. B. EtherCat, used in conjunction with the electrical supply of lighting in a cable of the bus system 6. If the lighting has to be additionally configured, this can be done with the same real-time bus.
  • the electrical line for the bus system 6 thus performs both the power supply for lighting with the lights 1 1 to 15, as well as the communication of the real-time bus to the lights 1 1 to 15.
  • the electrical line for the bus system 6 consists of at least two or more Cores or wire pairs.
  • the electrical power supply can use the same wires as the communication, or a part of these wires. It can also be run on separate wires in the line.
  • the electrical line for the bus system 6 may be designed as a data cable, of which at least one core pair is provided for connection to the electrical power supply and at least one wire pair for connection to the bus system.
  • the lights 1 1 to 15 receive the electrical line for the bus system 6 as a connecting cable or cable, with other lines or cables are not necessary. However, the lights 1 1 to 15 can each have a further connection. This connects via a second line for the bus system 6, a further light of the lights 1 1 to 15, etc., so that a kind of chain is created.
  • the real-time bus system 6 is not reserved exclusively for the lights 1 1 to 15. On the real-time bus system 6 z. B. Measuring devices may be included as participants that provide the stimuli for the inspection of containers 2. These include different sensors, such. As the light barriers 71, 72, IR sensors, RF Laugensensoren, the encoders 81, 82, distance sensors, metal sensors, color sensors, etc. The sensors can be connected via its own interface directly to the real-time bus system 6, or via an input / Output device connected to the real-time bus system 6. It is also possible that these sensors or input / output devices are also fed by means of the power supply located in the line of the real-time bus system 6.
  • At least one recording unit 21, 22, 25, 26 of the image recording system 40 is connected to the same real-time bus system 6 with a real-time interface.
  • An imaging system 40 may support a capture unit 21, 22, 25, 26 or multiple independent capture units 21, 22, 25, 26.
  • the interface between recording unit 21, 22, 25, 26 and image recording system 40 may be designed differently.
  • Typical interfaces between image capture system 40 and capture units 21, 22, 25, 26 may be an open standard, such as GigE Vision, USB, Camera Link, or other, but also a proprietary interface.
  • the imaging system 40 could be a smart camera with real-time bus interface. However, due to the configuration described above and below within the image acquisition system 40, care is taken to ensure that the bus system 6 and the network in connection with the connection line 7 are separate from each other, ie not the same or the same.
  • the real-time bus system 6 ensures that T D data is sent and received in finite time and short reaction time or delay time.
  • the real-time bus system 6 provides the ability for multiple or all of the subscribers connected to the real-time bus system 6 to operate synchronously, similar to a computer network.
  • the data is sent in a so-called frame or message.
  • the frame is cyclically exchanged among all subscribers, such as lights 1 1 to 15, sensors, etc.
  • the cycle time for transmitting a frame in the real-time bus system 6 can be from less than one millisecond to several milliseconds. Typical for the inspection technique are 0.5 - 10ms, ideally 1 - 2ms.
  • the real-time bus system 6 can synchronize the participants up to a few nanoseconds.
  • devices such as the participants of the real-time bus system 6, in particular the lights 1 1 to 15 and the recording units 21, 22, 25, 26, temporally mutually synchronous actions in the single-digit ⁇ - ⁇ run.
  • the action distributed to several devices such as the participants of the real-time bus system 6, in particular the lights 1 1 to 15 and the recording units 21, 22, 25, 26, extremely be performed synchronously.
  • An action in the sense of the present description is the synchronous execution of the exposure with the respective recording unit 21, 22, 25, 26 and the lamp flash of the lamps 1 1 to 15.
  • the devices are 1000 times more accurate synchronous than the cycle time, since there is a synchrony with the devices in the ⁇ - ⁇ instead of the ms.
  • the execution time must be differentiated in at least two different devices.
  • the reaction time is the time that elapses in the entire system until at least one action reaches the executing device from input stimuli.
  • the real-time bus system 6 used in the container inspection apparatus 10 offers both.
  • the bus system 6 of the container inspection device 10 is configured such that a trigger signal TG1, TG2 arbitrary lights of the lights 1 1 to 15 or any fields of the light fields 152, 153 of the lamp 1 1 or any combination of the recording units 21 to 26 and flash or Can trigger exposure time combinations. It is conceivable, for example, the combination to trigger the recording unit 25 and simultaneously, during an exposure time of ⁇ 00 [ ⁇ s the recording unit 25, the lamp 12, which is in particular a transmitted light, for a period of 10 ⁇ to activate and at the same time the lamp 13, the In particular, an incident light is to flash for a period of 50 seconds.
  • the container inspection device 10 is that the brightness of the recorded image on the flash length and / or energy of one of the lights 1 1 to 15 or a light field of the light fields 152, 153 of the light on the control of the image recording with one of the recording units 21 to 26 15 can be achieved.
  • Another embodiment is that different light fields 152, 153 of the lamp 15 are triggered at different times during a recording with the recording unit 26. This is necessary, for example, if specifically patterns and / or contrast edges of a container 2 or its label or closure etc. must be generated.
  • a further embodiment possibility is the targeted switching on of different color spectrums by means of, for example, the luminaire 12, in which case the switching on of the red-green-blue spectrum (RGB spectrum) by means of a light emitting diode (LED) can be mentioned as well as close IR spectrum and / or the UV spectrum. It goes without saying in this connection that all mixed colors can be generated here, in particular also during the course of the flash process.
  • RGB spectrum red-green-blue spectrum
  • LED light emitting diode
  • the bus system 6 is designed in such a way that a change of the bus topology, ie adding or removing a bus participant during operation of the container inspection device 10 is possible ("hot-plug") .
  • the container inspection device 10 is modularly expandable As a result, a standstill of the container treatment plant as a machine 1, for example in the case of variety changes, becomes as short as possible
  • the container inspection device 10 has a very robust construction with the structure described above both mechanically and thermally and with regard to the EMC protective measures to be observed.
  • FIG. 3 shows a frame 65 for a transmission of data in the bus system 6 of the container inspection device 10 according to a second embodiment.
  • the container inspection apparatus 10 and associated machine 1 are largely implemented in the same manner as described with respect to the first embodiment. Therefore, only the differences from the first embodiment will be described below.
  • the frame 65 in FIG. 3 has a frame header 651, a data part 652 and a frame end 652.
  • the data part has data blocks 6521 to 6525.
  • the real-time bus system 6 cyclically transmits the frame 65 to all subscribers after the cycle time has elapsed. If the response time, cycle time is sufficient, in the sense between the shortest time between stimuli and action, but the granularity of the cycle time in the application is not sufficient, a data block 6521 to 6525 in the data part 652 for a particular subscriber can be interpreted as oversampling. This is explained by the following example.
  • trigger TG1 should be triggered in 1, 6ms.
  • the cycle time is 1 ms.
  • the trigger TG1 can be triggered in one millisecond or after two milliseconds.
  • an oversampling can be performed. Ie. each value represents an execution time in the 0.2ms grid.
  • the information [0,0,0,1,0] would mean the oversampling of the trigger timing. This makes it possible to execute a trigger in 1, 6 ms with a temporal resolution of 200 ⁇ 8, although the cycle of the bus system 6 in the example is 1 ms.
  • oversampling in data portion 652 could be reduced or increased.
  • the oversampling in the real-time bus system 6 need not be the same for all subscribers. There could be subscribers with larger oversampling, others with none, others with less oversampling in the same real-time bus.
  • the oversampling is interpreted as a number instead of the previously described binary digitizing. This could, for example, with 8 binary digits, a granularity of 256 levels can be achieved. In the example, the granularity would then be about 3.9 s.
  • oversampling is interpreted as a "time slice” (second embodiment) or value (modification of the second embodiment) is only a matter of necessity, both of which are possible Memory occupancy increased the granularity or it can be triggered with one of the lights 1 1 to 15 in quick succession several flashes.
  • each of the 5 digits can be interpreted as a time slice of 200 ⁇ 8. Depending on the inspection task, both interpretations are possible in the same real-time bus system 6.
  • the recording unit 21 "receives" the information [0,0,1, 0,0] in the data part 652 and therefore takes a picture with the illumination of the lamp 1 1 at the time 400 ⁇ 8
  • the recording unit 22 "receives” the information [0, 0,0,0,1] in the data part 652 and shoots with the same illumination at the time ⁇ .
  • the information in the image acquisition system 40 is separated and fed into the correct connection lines 7 for the recording units 21, 22.
  • the container inspection apparatus 10 is executed in the same manner as described in the first embodiment. All previously described embodiments of the container inspection apparatus 10 and the container inspection process may be used individually or in all possible combinations. In particular, the features of the first to third embodiments can be combined as desired. In addition, the following modifications are conceivable, in particular.
  • the container inspection device 10 may also have only one luminaire, for example the first luminaire 11, or two luminaires. Alternatively, the container inspection device 10 may also have more than the five lights shown. In addition, the container inspection device 10 may also have only one receiving unit, for example the first receiving unit 21. Alternatively, the container inspection device 10 may also have more than six receiving units.
  • At least one of the lights 1 1 to 15 are also controlled such that the power P for a flash of the lamp 1 1 to 15 continuously increases over time.
  • another lamp of the lights 1 1 to 15 are also controlled such that the power of the lamp 1 1 to 15 continuously decreases over time t.
  • other variants are conceivable.
  • the lights can be 1 1 to 15 driven in the illumination of the container stream 3 with the maximum power of the lamp 1 1 to 15, if one or more of the recording units 21 to 26 perform an optical capture or image capture (s).
  • Connection module with power supply unit 43,44 Connection bus system 42,45,46 Connection for image acquisition system 40 48 Input / output module

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Abstract

L'invention concerne un dispositif d'inspection de récipients (10) et un procédé d'inspection de récipients pour l'inspection de récipients (2). Le dispositif d'inspection de récipients (10) comprend au moins une lampe (11 à 15) destinée à éclairer des récipients (2) à un instant d'inspection prédéterminé en vue de l'inspection des récipients (2), et une ligne électrique destinée à raccorder ladite lampe (11 à 15) à une source d'énergie électrique et à un système de bus (6), de sorte que la ligne électrique sert à la fois à alimenter ladite lampe (11 à 15) avec de l'énergie électrique et à la connexion avec un réseau de données en temps réel.
EP16705063.2A 2015-04-20 2016-02-08 Dispositif d'inspection de récipients et procédé d'inspection de récipients pour l'inspection de récipients Active EP3286552B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015106013.2A DE102015106013B4 (de) 2015-04-20 2015-04-20 Behälterinspektionsvorrichtung und Behälterinspektionsverfahren zur Inspektion von Behältern
PCT/EP2016/052635 WO2016169667A1 (fr) 2015-04-20 2016-02-08 Dispositif d'inspection de récipients et procédé d'inspection de récipients pour l'inspection de récipients

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EP3286552A1 true EP3286552A1 (fr) 2018-02-28
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US (1) US10261029B2 (fr)
EP (1) EP3286552B1 (fr)
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EP4328680A1 (fr) 2022-08-17 2024-02-28 Krones AG Dispositif et procédé d'inspection de récipients

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DE102015106013A1 (de) 2016-10-20
DE102015106013B4 (de) 2024-02-08
US10261029B2 (en) 2019-04-16
WO2016169667A1 (fr) 2016-10-27
US20180136142A1 (en) 2018-05-17
AT16388U2 (de) 2019-08-15
CN107667286A (zh) 2018-02-06
EP3286552B1 (fr) 2021-01-20
CN107667286B (zh) 2020-10-02
AT16388U3 (de) 2020-05-15
DE202015009702U1 (de) 2019-05-02

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